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[#7171] Support parsing Oracle DECODE function

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This commit is contained in:
lukaseder 2018-03-09 11:53:56 +01:00
parent 6399be2373
commit 42ee53b027
2 changed files with 26 additions and 0 deletions
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2
jOOQ-manual/src/main/resources/org/jooq/web/grammar-3.11.txt
View File

@ -555,6 +555,7 @@ term =
| dateLiteral
| 'DATE_TRUNC' '(' stringLiteral ',' field ')'
| 'DAY' '(' field ')'
| 'DECODE' '(' field ',' field ',' field { ',' field } ')'
| 'DENSE_RANK' ( '(' ')' over | '(' fields ')' withinGroup )
| ( 'DEG' | 'DEGREE' ) '(' sum ')'
| 'EXTRACT' '(' datePart 'FROM' field ')'
@ -562,6 +563,7 @@ term =
| 'EVERY' '(' field ')' [ filter ] [ over ]
| 'FLOOR' '(' sum ')'
| 'FIRST_VALUE' '(' field ')' over
| 'GETDATE' '(' ')'
| 'GREATEST' '(' fields ')'
| 'GROUP_CONCAT' '(' [ 'DISTINCT' ] field [ 'ORDER BY' sortFields ] [ 'SEPARATOR' stringLiteral ] ')'
| 'GROUP_ID' '(' ')'

24
jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
View File

@ -3835,6 +3835,9 @@ final class ParserImpl implements Parser {
else if (parseFunctionNameIf(ctx, "DEGREE") || parseFunctionNameIf(ctx, "DEG"))
return deg((Field) parseFieldSumParenthesised(ctx));
if ((field = parseFieldDecodeIf(ctx)) != null)
return field;
break;
case 'e':
@ -4923,6 +4926,27 @@ final class ParserImpl implements Parser {
return null;
}
private static final Field<?> parseFieldDecodeIf(ParserContext ctx) {
if (parseFunctionNameIf(ctx, "DECODE")) {
parse(ctx, '(');
List<Field<?>> fields = parseFields(ctx);
int size = fields.size();
if (size < 3)
throw ctx.expected("At least three arguments to DECODE()");
parse(ctx, ')');
return DSL.decode(
(Field<Object>) fields.get(0),
(Field<Object>) fields.get(1),
(Field<Object>) fields.get(2),
(Field<Object>[]) (size == 3 ? EMPTY_FIELD : fields.subList(3, size).toArray(EMPTY_FIELD))
);
}
return null;
}
private static final Field<?> parseFieldYearIf(ParserContext ctx) {
if (parseFunctionNameIf(ctx, "YEAR")) {
parse(ctx, '(');